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But the law does not require such testing for herbal remedies like macaIn applying for FDA clearance to sell maca, Pure World Botanicals reported that Qun Yi Zheng, the company’s chief scientist, conducted studies on some 200 lab rats. He found that maca fed rodents exhibited a “penile intromission” rate three to four times that of rats deprived of the herb. Requires before allowing the sale of pharmaceutical drugsTo introduce a new herbal ingredient into the United States, manufacturers must provide the FDA with evidence that “such dietary ingredient will reasonably be expected to be safe.” Herbals on the market before the law passed do not require any testingFEAR OF MEDICAL THREATSCritics of the law say it allows potentially hazardous products to reach the market,buy weight loss supplements online, where they can pose a serious threat to unsuspecting consumersAnd their concern isn’t limited to obscure aphrodisiacs like macaIn 1995, Metabolife International of San Diego began selling Metabolife 356, which is now one of the most widely used diet pills in the nation with sales of more than $900 million a yearMetabolife contains the Chinese herb ma huang, or ephedra, which has been linked to more than a thousand adverse reactions and more than a hundred deathsCourt records show that Metabolife’s premarket clinical testing of its product consisted of two tests conducted in China on 48 lab rats.